Window screen



Dec. 20, 1949 s. FlsToR 2,491,555

I WINDOW SCREEN Filed June 1, 1945 2 Sheets-Sheet 1 may, 1

Inventor I l/l I .0

By M

Dec, 20, 1949 s, IST R 2,491,555

WINDOW SCREEN Filed June 1, 1945 2 Sheets-Sheet 2 f I I I I Inventor Patented Dec. 20, 1949 UNITED STATES PATENT OFFICE WINDOW SCREEN Stephen Fistor, Battle Creek, Mich.

Application June 1, 1945, Serial No. 597,093

1 Claim.

The present invention relates to an improved window screen, particularly a type which lends itself adaptable for use in conjunction with a conventional window structure embodying a standard frame and upper and lower sliding sashes.

By way of introduction, it is to be pointed out that knowledge of the field of invention to which the instant endeavor relates reveals that it is a matter of common knowledge to mount spring-wound screens in the outermost frame members of the upper and lower'sashes and to anchor the free ends of the screens in the corresponding end members of the surrounding frame, this so that when either sash is shifted to open position, the screen is unreeled in a manner to span the opening thus left.

Admittedly, then, the art to which the invention relates is, in general terms, well established. It follows, therefore, that the present invention contemplates the adoption and use of certain structural improvements and refinements which it is believed contribute their proportionate functions in providing a screen adaptation which better fulfills the requirements of inventions in this category.

More explicitly, in carrying out the invention, novelty is predicated, on the one hand for expeditiously and satisfactorily attaching the free end of the screen to the window sill, the means being simple and practical and advantageous compared to s milar screen-anchoring devices in this field of endeavor.

The main improvement, however, has to do with an especially constructed casing unit in which a screen reeling and unreeling drum is mounted, said casing unit having a properly positioned and constructed screen-guiding bead which is in contact with. an adjacent portion of the screen as it winds and unwinds, this in a manner to properly and effectively spread and lay the screen in place against the conventional stop strips to thus effectively and adequately screen the opening.

Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawings.

In the drawings, wherein like numerals are a 2 as constructed in accordance with the present invention.

Figure 2 is a fragmentary sectional and elevational view showing a screen stretched and applied over the opening, this bringing out the principal improvements herein under consideration.

Figure 3 is a perspective view which is utilized to bring out the screen-anchoring means.

Figure 4 is an enlarged longitudinal sectional view through the screen and its housing.

Figure 5 is a perspective view of the screenwinding spool or reel.

Referring to Figures 1 and 2 of the drawings, it will be seen that the upper and lower sashes, which are conventional, are denoted by the reference characters A and B, these being slidable in a regulation frame structure C including the usual parting strips D, stop strips or beads E and sills F and G.

As before indicated, the automatic spanning screens are adapted for coaction for both upper and lower sashes. However, the principle of construction and use is the same as regards each sash, and therefore a description of one will suffice for both. In carrying out the invention, the lower transverse or horizontal frame member 6 of the sash B is rabbeted or grooved to accommodate an especially designed shell or casing l. One side of the rabbet is open, that is, the side facing, for example, the sill F, at the lower right in Figure 1. This necessitates slotting of the casing and shaping and positioning of the slot to achieve the desired ends. The upper edge of the slot is provided with a bead 8, the latter on the upper half-portion 9 of the casing. The ends of the casing are oval-like in configuration and appearance, as indicated at [0. The lower haIf-portion of the casing, indicated at H, has its free end fashioned into a yieldable lip, which terminates in a horizontal bead l2 forming a runner or shoe, as well as a guide. It serves as a guide for the screen wire l3 and also has running contact with the screen wire and thus functions as a shoe to press the screen wire tautly to the desired position. The desired position, in this instance, is in contact with the adjacent inner edges of the stop strips E. It follows that this guide yieldably projects to a position so that it is in close spaced relation to the strip E in order to function properly.

The screen is wound on a spool or reel including a drum I 4 with suitable heads l5 mounted in the casing, the drum having spring means for keeping the screen wire constantly under tension, and said spring being indicated at l6.

The lower free end of the screen wire is provided with channeled stay bar I! whose channeled portion coacts with a channeled flange or lip 58 on the anchoring bar I9. The latter is fastened to the sill F, as shown at the lower right in Figure 1. At the top, that is, at the upper left, the arrangement is slightly different, but the principle is the same. I also employ a slide 2% having its opposite edges channeled, as at Ha and 58a to coact with the channels ll. and I8 in an obvious manner to join and fasten the parts together. Thus, I provide secure means for detachably anchoring the screen-end in place.

I am sufiiciently conversant with the prior stateof the art to which the invention relates to realize that the novelty, perhaps, in the instant matter, resides in the means ll to 20,, inclusive, at the upper left in Figure 3; and the screen-tracking, guide and retaining shoe I2 on the casing for properly spreading and applying the screen as the sash moves up or down.

A careful consideration of the foregoing, description in conjunction with the invention as illustrated in the drawing will. enable the reader to obtain a clear understanding of the alleged features of merit and novelty sufiicient to clarify the construction of the invention as hereinafter claimed.

Minor changes in shape, size, materials and; rearrangement of parts may be resorted to in actual practice so long as no departure is made from the invention as claimed.

I claim:

In a structural assemblage of the class shown and described, a conventional type window frame including customary vertical stop strips and a horizontal sill situated in the usual manner between the lower end portions of said strips, a conventional window sash slidable in said frame in customary fashion, the inner portion of the lower rail of the sash being rabbeted to provide a groove and said groove opening through the longitudinal edge portions adjacent to said sill and also opening through the opposite ends of said rail, an elongated casing fitted and wholly confined in said groove, said casing being closed at its opposite outer ends and provided along one side, the side facing the sill and stop strips, with an elongated slot, the lower edge portion of said slot having an outstanding bead form ing a screen contacting, spreading and retaining shoe, that portion of the shoe contactable with. the screen being of convex form, a spring-wound drum mounted for rotation in said casing in parallelism with said slot and shoe, a screen attached to and wound at one end on said drum, the opposite end of the screen extending through and outwardly beyond said slot,.and means, on the opposite end portion of the screen adapted to be securely fastened to, said sill.

STEPHEN FISTOR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 956,966 Holmes May 3, 1910, 1,243,928 Fisher Oct. 23, 19-1-7 1,280,285 Owen Oct. 1., 191.8- 1,859,883 Nordmarken May 2 1, 1932- 2,243,790 Blood May 27', 1941 

